Molten salts are promising catalysts. How to apply in practice?

B. A.A.L. Van Setten, C. Van Gulijk, M. Makkee, J. A. Moulijn

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)


A diesel soot filter with a Cs2SO4 · V2O5 molten salt diesel soot oxidation catalyst has been developed. An engine test-bench was used to test it in diesel exhaust gas with ELPI analysis and to deposit diesel soot on filters for temperature programmed oxidation experiments. Molten salt (Cs2SO4 · V2O5) based catalytic foam has an onset temperature for catalytic oxidation of 320°C. This is a promising temperature for continuous filter-regeneration applications. Unfortunately the liquid state of the catalyst makes it unfit for the very effective wall-flow monolith filter, and necessitates the use of a foam filter as support. The onset temperature of the catalytic foam of 320°C is still too high to justify a change from wall-flow monolith to foam, as ceramic foam is a less effective filter than the wall-flow monolith. Foams are no "absolute" filters, and should be optimized for each application.

Original languageEnglish
Pages (from-to)275-278
Number of pages4
JournalTopics in Catalysis
Issue number1-4
Publication statusPublished - Sep 2001
Externally publishedYes


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